/* ── Reset & Base ─────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  font-size: 10.5pt;
  line-height: 1.65;
  color: #1a202c;
  background: #fff;
}

/* ── Print setup ──────────────────────────────────────────────────────── */
@page {
  size: A4;
  margin: 20mm 18mm 20mm 18mm;
}
@media print {
  .no-print {
    display: none !important;
  }
  a {
    color: inherit;
    text-decoration: none;
  }
  .page-break {
    page-break-before: always;
  }
  .avoid-break {
    page-break-inside: avoid;
  }
  /* Preserve background colours and gradients when printing */
  * {
    -webkit-print-color-adjust: exact !important;
    print-color-adjust: exact !important;
  }
}

/* ── Colour tokens ────────────────────────────────────────────────────── */
:root {
  --brand: #1a56db;
  --brand-lt: #ebf2ff;
  --aws: #ff9900;
  --aws-lt: #fff8ec;
  --azure: #0078d4;
  --azure-lt: #e8f4fd;
  --gcp: #34a853;
  --gcp-lt: #eafaf0;
  --accent: #6b46c1;
  --accent-lt: #f5f0ff;
  --warn: #d97706;
  --warn-lt: #fffbeb;
  --danger: #dc2626;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-400: #94a3b8;
  --gray-600: #475569;
  --gray-800: #1e293b;
}

/* ── Cover page ───────────────────────────────────────────────────────── */
.cover {
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a8a 50%, #1a56db 100%);
  color: #fff;
  padding: 60px 40px;
  page-break-after: always;
}
@media print {
  .cover {
    height: 257mm;
  }
}
.cover-logo {
  font-size: 72px;
  margin-bottom: 24px;
}
.cover h1 {
  font-size: 34pt;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 10px;
}
.cover h2 {
  font-size: 17pt;
  font-weight: 400;
  opacity: 0.85;
  margin-bottom: 40px;
}
.cover-divider {
  width: 80px;
  height: 4px;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  margin: 0 auto 40px;
}
.cover-meta {
  display: flex;
  gap: 40px;
  justify-content: center;
  font-size: 10pt;
  opacity: 0.75;
}
.cover-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}
.badge-row {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.badge {
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 9pt;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.badge-aws {
  background: var(--aws);
  color: #1a202c;
}
.badge-azure {
  background: var(--azure);
  color: #fff;
}
.badge-gcp {
  background: var(--gcp);
  color: #fff;
}
.badge-mc {
  background: var(--accent);
  color: #fff;
}

/* ── TOC ──────────────────────────────────────────────────────────────── */
.toc-page {
  padding: 48px 0;
  page-break-after: always;
}
.toc-page h2 {
  font-size: 18pt;
  font-weight: 700;
  color: var(--brand);
  border-bottom: 3px solid var(--brand);
  padding-bottom: 10px;
  margin-bottom: 28px;
}
.toc-section {
  margin-bottom: 6px;
}
.toc-section > a {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  text-decoration: none;
  color: var(--gray-800);
  font-weight: 600;
  font-size: 10.5pt;
  padding: 4px 0;
  border-bottom: 1px dotted var(--gray-200);
}
.toc-section > a:hover {
  color: var(--brand);
}
.toc-sub {
  padding-left: 20px;
  margin-top: 2px;
}
.toc-sub a {
  display: flex;
  justify-content: space-between;
  text-decoration: none;
  color: var(--gray-600);
  font-size: 9.5pt;
  padding: 2px 0;
}

/* ── Page wrapper ─────────────────────────────────────────────────────── */
.content {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 0 48px;
}

/* ── Section headings ─────────────────────────────────────────────────── */
.section-heading {
  margin-top: 48px;
  margin-bottom: 20px;
  page-break-after: avoid;
}
.section-heading h2 {
  font-size: 17pt;
  font-weight: 700;
  color: var(--brand);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 2px solid var(--brand);
  padding-bottom: 8px;
}
.section-heading h3 {
  font-size: 12pt;
  font-weight: 700;
  color: var(--gray-800);
  margin-top: 28px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.section-heading h4 {
  font-size: 10.5pt;
  font-weight: 700;
  color: var(--gray-600);
  margin-top: 18px;
  margin-bottom: 8px;
}

/* ── Tables ───────────────────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 9.5pt;
  margin: 12px 0 20px;
  page-break-inside: avoid;
}
th {
  background: var(--brand);
  color: #fff;
  font-weight: 600;
  padding: 8px 12px;
  text-align: left;
  font-size: 9pt;
  letter-spacing: 0.3px;
}
td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--gray-200);
  vertical-align: top;
}
tr:nth-child(even) td {
  background: var(--gray-50);
}
tr:last-child td {
  border-bottom: none;
}

/* Provider-coloured table headers */
.tbl-aws th {
  background: var(--aws);
  color: #1a202c;
}
.tbl-azure th {
  background: var(--azure);
}
.tbl-gcp th {
  background: var(--gcp);
}
.tbl-rule th {
  background: var(--accent);
}

/* ── Callout boxes ────────────────────────────────────────────────────── */
.callout {
  border-left: 4px solid;
  border-radius: 0 6px 6px 0;
  padding: 12px 16px;
  margin: 14px 0;
  page-break-inside: avoid;
  font-size: 9.5pt;
}
.callout-info {
  border-color: var(--brand);
  background: var(--brand-lt);
}
.callout-warn {
  border-color: var(--warn);
  background: var(--warn-lt);
}
.callout-danger {
  border-color: var(--danger);
  background: #fff5f5;
}
.callout-success {
  border-color: var(--gcp);
  background: var(--gcp-lt);
}
.callout strong {
  display: block;
  margin-bottom: 4px;
  font-size: 9pt;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Provider chips ───────────────────────────────────────────────────── */
.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 8.5pt;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.chip-aws {
  background: var(--aws-lt);
  color: #92400e;
  border: 1px solid var(--aws);
}
.chip-azure {
  background: var(--azure-lt);
  color: #1e40af;
  border: 1px solid var(--azure);
}
.chip-gcp {
  background: var(--gcp-lt);
  color: #14532d;
  border: 1px solid var(--gcp);
}

/* ── Code / CSV blocks ────────────────────────────────────────────────── */
pre,
code {
  font-family: "Cascadia Code", "Fira Code", "Consolas", monospace;
  font-size: 8.5pt;
}
pre {
  background: #0f172a;
  color: #e2e8f0;
  padding: 14px 16px;
  border-radius: 6px;
  overflow-x: auto;
  margin: 10px 0 18px;
  line-height: 1.5;
  page-break-inside: avoid;
}
code {
  background: var(--gray-100);
  color: #be185d;
  padding: 1px 5px;
  border-radius: 4px;
}

/* ── Steps ────────────────────────────────────────────────────────────── */
.steps {
  counter-reset: step;
  list-style: none;
  margin: 12px 0 20px;
}
.steps li {
  counter-increment: step;
  display: flex;
  gap: 14px;
  margin-bottom: 14px;
  page-break-inside: avoid;
}
.steps li::before {
  content: counter(step);
  min-width: 28px;
  height: 28px;
  background: var(--brand);
  color: #fff;
  border-radius: 50%;
  font-size: 9pt;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ── Bullet lists ─────────────────────────────────────────────────────── */
ul,
ol {
  padding-left: 20px;
  margin: 8px 0 14px;
}
li {
  margin-bottom: 4px;
}
ul.check {
  list-style: none;
  padding-left: 4px;
}
ul.check li::before {
  content: "✓ ";
  color: var(--gcp);
  font-weight: 700;
}

/* ── Rule cards ───────────────────────────────────────────────────────── */
.rule-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 20px;
}
.rule-card {
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  overflow: hidden;
  page-break-inside: avoid;
}
.rule-card-header {
  padding: 8px 14px;
  font-weight: 700;
  font-size: 9pt;
  display: flex;
  align-items: center;
  gap: 8px;
}
.rule-card-body {
  padding: 10px 14px;
  font-size: 9pt;
  line-height: 1.6;
  color: var(--gray-600);
  word-break: break-word;
  overflow-wrap: break-word;
}
.rule-1a .rule-card-header {
  background: #fef3c7;
  color: #92400e;
}
.rule-1b .rule-card-header {
  background: #dbeafe;
  color: #1e40af;
}
.rule-1c .rule-card-header {
  background: #d1fae5;
  color: #064e3b;
}
.rule-1d .rule-card-header {
  background: #ede9fe;
  color: #4c1d95;
}
.rule-os .rule-card-header {
  background: #fee2e2;
  color: #7f1d1d;
}
.rule-wl .rule-card-header {
  background: #e0f2fe;
  color: #0c4a6e;
}

/* ── Output column pills ──────────────────────────────────────────────── */
.col-pill {
  display: inline-block;
  font-family: monospace;
  font-size: 8pt;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--gray-800);
  white-space: nowrap;
}
.col-pill-new {
  background: #dcfce7;
  border-color: #86efac;
  color: #14532d;
}

/* ── Footer ───────────────────────────────────────────────────────────── */
.doc-footer {
  margin-top: 60px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
  font-size: 8.5pt;
  color: var(--gray-400);
  display: flex;
  justify-content: space-between;
}

p {
  margin-bottom: 10px;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ── Dark theme (screen only — printing always uses light) ──────────── */
.guide-theme-toggle {
  position: fixed;
  top: 14px;
  right: 14px;
  z-index: 1000;
  padding: 6px 12px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  background: var(--gray-50);
  color: var(--gray-800);
  font-size: 14px;
  cursor: pointer;
}
@media screen {
  [data-theme="dark"] {
    --brand: #7da2f5;
    --brand-lt: #1d2a47;
    --aws-lt: #33270f;
    --azure-lt: #122c40;
    --gcp-lt: #123321;
    --accent-lt: #281f3d;
    --warn-lt: #33290f;
    --gray-50: #1d2432;
    --gray-100: #242d3f;
    --gray-200: #38445c;
    --gray-400: #8b98ad;
    --gray-600: #aab6c8;
    --gray-800: #dde4ee;
  }
  [data-theme="dark"] body {
    color: #dde4ee;
    background: #151a26;
  }
  [data-theme="dark"] .callout-danger {
    background: #351b20;
  }
  [data-theme="dark"] code {
    color: #f286b6;
  }
  [data-theme="dark"] .chip-aws {
    color: #fbbf24;
  }
  [data-theme="dark"] .chip-azure {
    color: #7cb8f7;
  }
  [data-theme="dark"] .chip-gcp {
    color: #6ee7a0;
  }
  [data-theme="dark"] .col-pill-new {
    background: #14301d;
    border-color: #1f5231;
    color: #8fdfa8;
  }
  [data-theme="dark"] .rule-1a .rule-card-header {
    background: #3a2c0c;
    color: #fcd34d;
  }
  [data-theme="dark"] .rule-1b .rule-card-header {
    background: #172a4d;
    color: #93c5fd;
  }
  [data-theme="dark"] .rule-1c .rule-card-header {
    background: #0e3327;
    color: #6ee7b7;
  }
  [data-theme="dark"] .rule-1d .rule-card-header {
    background: #2b2350;
    color: #c4b5fd;
  }
  [data-theme="dark"] .rule-os .rule-card-header {
    background: #3d1a1a;
    color: #fca5a5;
  }
  [data-theme="dark"] .rule-wl .rule-card-header {
    background: #0e2a3a;
    color: #7dd3fc;
  }
}